I've got a 2015 MKC 2.3l that's been pretty flawless. In at 74k miles now and very recently noticed a slight judder when the auto trans shifts. Doesn't seem to be limited to one gear or during cold but it's not constant. Just seems to happen periodically when the trans shifts. Fluid's never been changed that I know of. I think Ford just calls for inspection of level at service intervals so far. I haven't actually had the car in for a factory service since the beginning of the year, when I was at about 45k miles. The only in depth thread I've found on hear about eh MKC references a PTU issue. But digging seems to point to someone confusing the MKC with the MKX and other Lincolns that had that issue. Doesn't seem to be a thing in the 'C. I've never had a quick change place do a "flush." But I'm wondering if that may actually be warranted in this case? Like maybe a stuck valve or something? I've seen a FEW posts about undefilled fluid in 2015 and older Escapes. I hate my dealer's service dept but I suppose I COULD go to them....Any thoughts?